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Separation and characterization of limonoids from Switenia macrophylla (Meliaceae) by HPLC–NMR technique has been described. Analyses were carried out using reversed-phase gradient HPLC elution coupled to NMR (600MHz) spectrometer in stopped-flow mode. Separated peaks were collected into an interface unit prior to NMR measurements, which were performed with suppression of solvent signals by shaped...
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